Safety-heater.



R. KTDDL SAFETY HEATER. APPLICATION FILED MAIL-28. l9l6.

Patented Aug. 7, 1917.

3SHEEIIS-SHEET 1.

R. KJDDEl SAFETY HEATER.

APPLICATION FILED MAR. 28, l9l 6 Patented Aug. 7, 1917.

' 3 SHEETS-SHEET 3.

. fegrzar A72 is, awwmm REGNAR KIDDE, on NEW YORK, N. Y.

SAFETY-HEATER. f

To all whom it may concern:

Be it known that I, REGNAR Krona, a citizen of the United States, residing at New York city, borough of Manhattan, county and State of New York, have invented certain new and useful Improvements in Safety-Heaters, the following being a full,

clear, and exact disclosure of the one form of my invention which I at present deem preferable. 1

For a detailed description of the present form of my invention, reference may be had to the following specification and to the accompanying drawings, which illustrate my 'heater suitable for use in garages, or in other situations where theflame has to be guarded from contact with inflammable elements in the atmosphere. I

Referring to the drawing, A represents an outer casing formed of sheet metal and closed except on the top which is perforated and'onthe bottom which is open. The casa vertically sliding door B having a handle b. This door is of the full width of the cas ing and nearly the full height thereof, and j 'then brought down over the upper end of the ing is mounted on'standards K, K, screwed into its bottom and isprovided in front'with slides in vertical grooves at its opposite edges. The compartment formed by the outside casing-walls A may be referred to as the primary chamber. In this primary chamber is formeda secondary chamber by means of the sheet iron walls C spaced a distance away from the aforesaid walls A. The second ary casing is closed on all sides except at the Specification of Letters Patent. I

by interlocking valves P.

the cross bar of the loop Patented Au 7, 1917.

Application fil'ed March 28, 1916. Serial No.- 87,226.

E may be provided with a small opening adjustable in size by a damper, if so desired.

Inside of the seconda'ry chamber is formed a third or tertiary chamber by means of the walls D cooperating with one of the walls C.

This third chamber is of the full width of the secondary chamber and is open at the top and bottom, the bottom opening being coveredby a gauze panel d.- In this third chamber 1s a gas-burner F with its igniting or pilot burner f, both burners being controlled p In that wall C for'ming the front wall of the third chamber isthe door G which is of the'construction shown in detail in Figs. 5 and 6. Referring to those figures, the circular door-frame G is made of a gradually increasing thickness from top to bottom to form an inclined front bearing face on which is seated the circular door. The door is formed of a circular frame G inclosing a gauze paneljG and having on its inner face a groove containing a packing ring G that seats against a circular ridge or flange on the outer face of the frame G The door is hinged at its upper side on'th e pintle' G8 and is also provided with a closing spring G The door, being hinged at the top, tends to close by gravity, the closing tendency being aided by the lower part of frame G, and adapted, when lifted into its upright position, to engage the lug g? on the door and thereby force the door hard down on its seat. A loop G is lever to hold it in'place with a wedging action. -A screw G may also be provided in to take up wear. When the loop is lifted the lever can be turned into the position shownin dotted lines to release the door, being arrested in that positionby engagement with the stop g on the wall C. In that position the lever will project into the downward path of the .vertically sliding door B and prevent its closure, while, unless the door B is lifted up, the lever can not come into its said releasing position. That tends to insure the closing of the inside door. The arrangement just described has been devised by me to meet the requirements of the fire department of New York'city and, together with the heater described herein, has been approved and authorized by that department.

In operation the air entering the'bottom of the primary chamber passes through the gauze panel cZ beneath the burner F "intothe third chamber where it is heated and passes thence upward into the secondary chamber where it imparts its heat to the walls of:that chamber. Thence it goes through the gauze panel 0 into the space between the :walls A and'G finally escaping by the flue or'opening a into theapartment to be heated or into a chimney. The air also passes up into 'the primary chamber along the heated iwallsC of thesecondary'chamber and thence escapes intothe apartment to be heated through the perforated top wall of .the said primary chamber. At no point does the atmosphere of the apartment come into contact :withthe :flame without the intervention of the gauze screen. So long .as the pilot fi-ame'=continues to burmthere 1s no occasion for opening up the third chamber containing the burner, and the inside door leading to that chamber is adequately secured by the constructionl havedescribed. I

What I claim as new and deslre to secure by Letters Patent is: V

1. A heater-containing a primary chamber open toithe apartment to be heated,- a secondary chamber having its walls contained within but separated from the walls of said primary chamber,- one wall of said secondary chamber having an opening communicating with the primary chamber and covered with wire gauze, athird chamber contained in said secondarychamber-but in communication therewith,- a burner in said third chamber, and a space or flue connecting said: secondary chamber withthe outlet flue or openingzfor the productsof combustion, but cut-ofl' by wire gauze'from. free communication with said secondary chamber. I

i 2. A heater containing a primary chamber open at opposite points to the ap'artment to'be heated and a secondary: chambercontained in 'but having its walls spaced from the walls of the said primary chamber and shutofl from free communication therewith, a flame burner for heating saidsecond-ary chamber, a door for said primary chamber,

,and'a gauze doorinone wallof. said secondclosed position by pressure and latchforsaidlever. i 1

ary chamber'adjacent to and in line with the aforesaid door in the primary chamber.

- A heatercontaining a primary chamber open on opposite sides to the apart- 'ment"to be heated and a secondary chamber door-ofthe-secondary chamber-to its closed 'positionw- 1 *4. heater comprising primary and secondary chambers," the latter included -within- ;tl1,e' former and containing a flame burner and a gauze door for thesecoridary chamber adapted to close by gravityon an inclined seat and an external lever provided With a latch and 'ad-apted to press the door uponitsseat when closed;

5. A heater comprising primary and secondary chambers; the-- latter being 1ncluded W1th1n the former and containing a flame burner, a. door in the primary cham ber an-adjacent-gauze door in the secondary chamber and a retaining device for the said gauze 'dooradapted when n 1ts releaslng position .toprevent the closure of the-said door in the primary chamber.

6. heater comprising primary and secondary chambers -the latter being ineluded within the former andprovided with .a flame device, and agauzedoorior-the secondary chamber; provided with an external cam lever adapted-to retain said door'in its a retalning '7; A heater containing primary and secondary' -chambers, the .latter being contained in the former but-out of free communication therewith, 1 an internal flame burner for heating the secondary chamber and a gauze dooli for the secondary 'cham- .ber having arr-inclined bearing vface and retaining devices for holding the doi0r=under pressure in engagement with its said bearingfaca 1 wIn *witness whereof I have hereunto set my handth-is'Qlst dayof March, 1916:

- M REGNAR KIDDE.

fiopies of this patentmay b e obtained ffor -flve cents each, byladdressing the Commissioner of .Iatents,

. 1. Washingtomnm v 

